Retractor for heart valve surgery



FIG. 1 is a front isometric view of a retractor for heart valve surgeryaccording to the invention showing our new design.

FIG. 2 is a rear isometric view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a rear elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for a retractor for heart valve surgerysubstantially, as shown and described.